i have no idea, how this dev.heaven tracker worksAKS74U should not have 600 meters range, if BIS gave 400 to G36A and 300 to M4i think under this condition AKS74U should have 250-300 metersSVD should have 100-200 meters smaller AI fire range than M24/M40, instead of 300 meters bigger

The actual issue is that muzzle velocity is specified in magazines config, so all the weapons sharing the same mags will fire the same way. A workaround for this issue has been implemented by ACE and ACE2 by replacing mags depending on the weapon used via scripting: http://community.bistudio.com/wiki/ACE2_Features#Magazines_System

BIS is military ignorance :/it has nothing to magazine and another ACE advertisement goddamn spam sticking in every hole :/it is MaxAIrange=...;it is silly bug, very easy to change by BIS in releases, a.t.m. only addons fix this issue